DFRobot_SHT20

• 中文版

This is a SHT20 I2C temperature & humidity sensor with waterproof probe. It comes with the 4C CMOSens® SHT20 temperature & humidity sensor chip, and the probe has gone through dual waterproof protection. The SHT20 I2C temperature & humidity sensor adopt Sensirion new technique. Besides the capacitive type humidity sensor and the band gap temperature sensor, the chip contains an amplifier, A/D converter, OTP memory and a digital processing unit. Compared with early SHT1x series and SHT7x series, SHT20 shows better reliability and long-term stability. It can measure surrounding environment temperature and relative air humidity precisely.

Product Link (https://www.dfrobot.com/product-1636.html)

SKU: SEN0227

Table of Contents

• Summary
• Installation
• Methods
• Compatibility
• History
• Credits

Summary

• The Arduino SHT20 waterproof temperature & humidity sensor adopts dual waterproof protection.
• The inner PCB has perfusion and encapsulation protection, and the probe enclosure is made of PE waterproof materials.
• This is a special waterproof breathable material that allows water molecules to seep in, blocking water droplets from seeping in.
• The sensor won't be damaged even if it is submerged in water for a long time.
• There is a built-in 10k Pull-up resistor and 0.1uf filter capacitor, so it can be used directly with the microcontroller such as Arduino.
• Recommend DFRobot Gravity 4Pin Sensor Adapter, it is quite convenient.

Installation

To use this library, first download the library file, paste it into the \Arduino\libraries directory, then open the examples folder and run the demo in the folder.

Methods

  /**
   * @fn initSHT20
   * @brief Init function
   * @return None
   */
  void initSHT20(void);

  /**
   * @fn readHumidity
   * @brief Read the measured data of air humidity
   * @return Return the measured air humidity data of float type, unit: %
   */
  float readHumidity(void);

  /**
   * @fn readTemperature
   * @brief Read the measured temp data
   * @return Return the measured temp data of float type, unit: C
   */
  float readTemperature(void);

  /**
   * @fn checkSHT20
   * @brief Check the current status information of SHT20
   * @n Status information: End of battery, Heater enabled, Disable OTP reload
   * @n Check result: yes, no
   * @return None
   */
  void checkSHT20(void);

Compatibility

MCU	Work Well	Work Wrong	Untested	Remarks
Arduino Uno	√
Arduino MEGA2560	√
Arduino Leonardo	√
FireBeetle-ESP8266	√
FireBeetle-ESP32	√
FireBeetle-M0	√
Micro:bit	√

History

• 2017-9-12 - Version 1.0.0 released.

Credits

Written by Zhangjiawei(jiawei.zhang@dfrobot.com), 2021. (Welcome to our website)